Home / 257,144.40-385,672.86-70,112.16

Finding the Fourth Proportional to 257,144.40, 385,672.86 and 70,112.16

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Solution

The fourth proportional to 257,144.40, 385,672.86 and 70,112.16 is: 105,156.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,144.40 : 385,672.86 = 70,112.16 : x
  2. Step 2: Convert to fraction form
    257,144.40/385,672.86 = 70,112.16/x
  3. Step 3: Cross multiply
    257,144.40x = 385,672.86 × 70,112.16
  4. Step 4: Simplify right side
    257,144.40x = 27,040,357,267.98
  5. Step 5: Solve for x
    x = 27,040,357,267.98/257,144.40
  6. Step 6: Final answer
    x = 105,156.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.